Space Marines (Chaos included) are ridiculously fucking lame. Games Workshop blows, because it's pretty pointless to play anything else. Balancing is extremely important in strategy games, and Games Workshop doesn't even pretend to care.

Ex: When you roll AT LEAST 30 attack dice every turn, and it takes to 3 turns to get a single wound, and then when they finally reach you they wipe you out in a single assault, something is very wrong.